I want my customers to be able to see what they uploaded to my site, can someone please help? Thanks:)
You should create a Uploads database collection.
Once a customer uploads a file, you should insert the fileUrl and originalFileName to the collection.
When you wish to show all the files, run a query, get these files and show them (as a textual list or in a repeater).
https://www.wix.com/velo/reference/$w/uploadbutton/uploadfiles
https://www.wix.com/velo/reference/wix-data/save
https://www.wix.com/velo/reference/wix-data/query